Viking Power Load Monitors provide a simple, cost effective, state-of-the-art method to monitor pump and system problems and alarm or shut down the pump when a change of load is detected at the motor.  They are applicable to positive displacement or centrifugal pumps, as well as other types of motor-driven equipment.  They are especially useful for pumps which are susceptible to damage due to dry running, such as sealless magnetic drive pumps*.

Viking Power Load Monitors require NO special programming and NO external power supply.  They are small enough to fit into a typical motor starter enclosure and can be set in as little as 3 seconds!

	M10	M20
Protection	Programmable for either overload OR underload	Four protection levels: Two for Overload Two for Underload
Approved To	UL, CE, cUL	UL, CE, cUL
Adjustable Startup Delay	1 - 64 seconds	1 - 999 seconds
Adjustable Response Delay	0.05 - 64 seconds	0.1 - 90 seconds
Analog Output of Shaft Power	No	4 - 20 mA, 20 - 4 mA, 0 - 20 mA, 20 - 0 mA
External Reset	Yes	Yes
Supply Voltage (Line Voltage)	1x 100 - 240 ±10% 3x 100 - 600 ±10%	1x 100 - 240 ±10% 3x 100 - 600 ±10% 3x 525 - 600 ±10% 3x 380 - 500 ±10%
Frequency	50 or 60 Hz	50 or 60 Hz
Power Consumption	3VA max.	6VA max.
Mounting	35mm DIN rail 46277	35mm DIN rail 46277
Dimensions	L x W x H 115 x 45 x 90 mm 4.5 x 1.8 x 3.5 inches	L x W x H 115 x 45 x 90 mm 4.5 x 1.8 x 3.5 inches
Weight	175 g (5.65 oz.)	300 g (10.5 oz.)

*Note: The power load monitor should not be used as exclusive protection in case of sudden discharge line blockage on positive displacement pumps.  Other means of protection such as a pressure relief valve must be used in conjunction with the power load monitor to avoid pressure spikes in the system.

Literature 

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Model	Drawing	Service Manual	Brochure	Catalog
M10	See Brochure	English	English	See Brochure
M20		English